596 



INDEX. 



Secretion, definition of. 211 

 gastric, 240 



histological changes during, 226 

 internal, definition of, 211 

 intestinal, 243 

 mammary, 264 

 mechanism of, 213 

 panel eal ic, 235 

 paralytic, 229 



psychical, of gastric juice, 239 

 relation of, to intensity of stimulus, 223 

 salivary. 230 

 sebaceous, 257, 342 

 sweat, 259 

 urinary, 251 

 Secretions, general characteristics of, 213 

 Secretogogues for the gastric glands, 359 

 Secretory centre, salivary, 230 

 fibres proper, definition of, 224 

 nerves, evidence for, 222 

 mode of action of, 225 

 of the adrenal bodies, 272 

 of the kidneys. 251 

 of the liver, 247 

 of the mammary glands, 263 

 of the pancreas, 232 

 of the stomach, 239 

 of tli<' swear glands, 259 

 salivary, endings of, 220 

 significance of, 214 

 stimulation of, 222 

 Semilunar valves. 110 



Sensory nerves, influence of, on respiration. 463 

 of the heart, 172 



relation of, to the respiratory centre, 459 

 reflex influence of, on the pulse-rate, 175 

 Septal nerves of the frog's heart, 166 

 Serous cavities, 146 



Serrati postici inferiores, respiratory function 

 of, :>w 

 superiores, inspiratory action of, 402 

 Serum, bactericidal action of, 36 

 glohulicidal action of, 36 

 osmotic pressure of. 68 

 toxicity of, 36 

 Serum-albumin, action of, on carbonates, 517 

 amount of, in the hlood, 52 

 composition of, 52 

 functions of. 52 

 properties of, 52 

 Sex, influence of, on heat production, 482 

 on pulse-rate, 121 

 on respiration, 430 

 relation of body-temperature to, 470 

 Shivering. 362, KM 

 Silicic acid, properties of, r>l!) 

 Silicon, 519 

 Simple proteids, 576 

 Sinuses of Valsalva, 1 1 1 

 Size, influence of, mi pulse-rate, 121 

 Skatol, 572 

 elimination of. 340 

 occurrence of, in feces, 320 

 Skin, functions of. 341 

 glands of, '.'57 



Sleep, etlect of. on metabolism, 361 

 on the respiratory quotient, 438 

 on respiration, 124 

 Smegma prseputii, 257 

 Sneezing, 154 

 Snoring, 455 

 Sobbing, 454 

 Sodium ammonium phosphate, 523 



carbonates, 522, 523 



chloride, nutritive history of, 521 



phosphates, 522 



sulphate, 522 



Special respiratory movements, 453 

 Specialization of function, 21 

 Specific gravity of blood, 34 

 of blood-corpuscles, 34, 35 

 of urine, 251 

 heat, definition of, 477 

 of the human body, 504 

 Spectroscope, 40 

 Spectrum, definition of, 40 

 of CO-hsemoglobin, 44 

 of haemoglobin, 42 

 of oxyhemoglobin, 41 

 solar, 41 

 Spermaceti, 540 



Spermin, physiological action of, 273 

 Sphincter antri pylorici, 377 

 pylori, 377, 381 ' 

 urethrse, 390 

 vesicae internus, 390 

 Sphincters ani, 386 

 Sphygmograur, 143 

 Sphygmograph, 142 

 Sphygmomanometer, 141 

 Sphygmometer, 141 



Spinal centres for vaso-motor nerves, 199 

 Spirometer, 427 



Splanchnic nerves, gastric fibres of, 382 

 influence of, on blood-pressure, 173 



on respiration, 403 

 intestinal fibres of, 385 

 stimulation of, 173 

 Spleen, composition of, 333 

 function of, 322 

 innervation of, 333 

 movements of, 322 

 vasomotor nerves of, 207 

 Stannius's ligatures, 178 

 Starch, 566 



digestion of, 2^4, 305 

 hydrolysis of, by acids, 286 

 by amylolytic ferments, 285 

 Starvation, etlect of. on metabolism, 362 

 glycogen disappearance during, 331 

 nutrition during, 350 

 phosphorus excretion in, 516 

 potassium excretion in, 520 

 Steapsin, 232, 280 



den stration of, 306 



occurrence of, 305 

 Stearic acid, 541 

 Stenson's duct, 217 

 Stereo rin, 575 



Sterno-cleido-mastoid muscles, respiratory ac- 

 tion of, 404 

 Sternum, respiratory movements of, 401 

 Stethograph, 423 

 Stimulants of the sweat glands, 260 



physiological action of, 357 

 Stimuli, artificial, effect of, on I lie heart, 156 

 Stokes's reagent, composition of, 43 

 Stomach, absorption in, 312 

 extirpation of, 299 

 glands of, 237 



immunity of, to its own secretion, 2i)7 

 innervation of, 381 

 movements of. 377. 378 

 musculature of, 377 

 Strom uhr of Ludwig, 99 

 St rontium, 526 



Strychnine, etlect of, on body-temperature, 472 

 Sturin, 580 



Sublingual gland, anatomy of, 217 

 Submaxillary gland, anatomy of, 217 

 Succinic acid, 557 

 SUCCUS entencus, 243 



:n lion of, on carbohydrates. 309 

 collection of. 308 



